public class Calculator implements CalculatorInterface {

	@Override
	public int add(int a, int b) {
		int result;
		result = a + b;
		return result;
	}

	@Override
	public int subtract(int a, int b) {
		int result;
		result = a - b;
		return result;
	}

	@Override
	public int multiply(int a, int b) {
		int result = a * b;
		return result;
	}

	@Override
	public double divide(double a, double b) {
		double result = a / b;
		return result;
	}

}
